Sunday, November 8, 2015

Crepidium acuminatum


Systematics
DomainEukaryotes
Eukaryotic
KingdomPlants
Plantae
DivisionVascular plants
Tracheophyta
ClassMonocot flowering plants
Liliopsida
OrderAsparagales
Asparagales
FamilyOrchids
Orchidaceae
GenusCrepidium
SpeciesCrepidium acuminatum
Scientific name
§crepidium acuminatum
AUTHOR(D.Don) Szlach.





Plants terrestrial, sometimes epiphytic. Stem cylindric, (1.5-)4-7 cm, 4-6 mm in diam., fleshy, with several nodes, mostly enclosed in sheath. Leaves 3-5, obliquely ovate, ovate-oblong, or subelliptic, (4-)6-12 × 2.5-6 cm, base contracted into a sheathlike, amplexicaul petiole 2-4 cm, apex acuminate. Inflorescence erect; peduncle 12-43 cm, wingless; rachis 3-9(-16) cm, 10- or more flowered; floral bracts lanceolate, 3-4(-6) mm. Flowers purplish red, ca. 1.5 cm in diam.; pedicel and ovary 7-10 mm. Dorsal sepal narrowly oblong or broadly linear, 8-9 × ca. 2 mm, 3-veined, margin revolute, apex obtuse; lateral sepals oblong, 6-7 × 3-3.5 mm, margin revolute, apex obtuse. Petals narrowly linear, 8-9 × ca. 0.8 mm, margin revolute; lip superior, ovate-oblong or obovate-oblong in outline, 10-11 × 6-7 mm, shallowly 2-lobed, with a sinus 1(-2) mm deep, with a pair of auricles decurrent backward embracing column, adaxially with a central groove in apical half; auricles ± narrowly ovate, 1/5-2/5 length of lip. Column 1-1.5 mm, stout. Capsule obovoid-oblong, ca. 1.8 × 1 cm; fruiting pedicel ca. 7 mm. Fl. and fr. May-Jul. 2n = 30, 36, 42.
Forests, shaded rocks along valleys; 300-2100 m. Guangdong, SW Guizhou, ?Taiwan, SE Xizang, S Yunnan [Bhutan, Cambodia, India, Indonesia, Laos, Myanmar, Nepal, Philippines, Thailand, Vietnam; Australia].

CITIES Category: Appendix II
References

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